Sony-STRK760P-rec-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL Sony Corporation Audio Group Published by Sony Engineering Corporation STR-K760P Canadian Model E Model Australian Model FM STEREO FM-AM RECEIVER Continued on next page SPECIFICATIONS Ver 1.1 2004.10 Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the doub

2、le-D symbol are trademarks of Dolby Laboratories. “DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc. 9-877-666-02 2004J16-1 2004.10 STR-K760P is the tuner and the amplifier section in HT-DDW760. Power Output1) Models of area code CA (6 ohms 1 kHz, THD 0.7%) F

3、RONT2): 60 W/ch CENTER2): 60 W SURR2): 60 W/ch FRONT2): 100 W/ch CENTER2): 100 W SURR2): 100 W/ch FRONT2): 80 W/ch CENTER2): 80 W SURR2): 80 W/ch (6 ohms 1 kHz, THD 10%) FRONT2): 100 W/ch CENTER2): 100 W SURR2): 100 W/ch (6 ohms 1 kHz, THD 10%) (6 ohms 1 kHz, THD 0.7%) Models of area code SP, E51 FR

4、ONT2): 45 W/ch CENTER2): 45 W SURR2): 45 W/ch (6 ohms 120 Hz - 20 kHz, THD 0.09%) Models of area code AU Amplifier section FRONT2): 100 W/ch CENTER2): 100 W SURR2): 100 W/ch (6 ohms 1 kHz, THD 10%) FRONT2): 80 W/ch CENTER2): 80 W SURR2): 80 W/ch (6 ohms 1 kHz, THD 0.7%) 1) Measured under the followi

5、ng conditions: CA120 V AC, 60 Hz SP230 V AC, 50 Hz AU, E51240 V AC, 50 Hz Area codePower requirements 2) Depending on the sound field settings and the source, there may be no sound output. Inputs (Analog) CD, MD/TAPE, VIDEO 1, 2, DVD Sensitivity: 800 mV Impedance: 50 kiloohms Inputs (Digital) DVD (C

6、oaxial)Sensitivity: - Impedance: 75 ohms VIDEO 2 (Optical)Sensitivity: - Impedance: - RadioFans.CN 收音机爱 好者资料库 2 STR-K760P Outputs (Analog) Reproduction frequency range: Tone 28 - 20,000 Hz MD/TAPE (OUT), VIDEO 1 (AUDIO OUT) Voltage: 800 mV Impedance: 10 kiloohms Gain levels6 dB, 1 dB step SUB WOOFER

7、Voltage: 2 V Impedance: 1 kiloohms FM tuner section Tuning range AM tuner section Antenna Antenna terminals 87.5 - 108.0 MHz FM wire antenna 75 ohms, unbalanced Intermediate Frequency10.7 MHz Tuning range Models of area code CA With 10-kHz tuning scale: 530 - 1,710 kHz3) With 9-kHz tuning scale: 531

8、 - 1,710 kHz3) Models of area code E51 With 10-kHz tuning scale: 530 - 1,610 kHz3) With 9-kHz tuning scale: 531 - 1,602 kHz3) With 9-kHz tuning scale: 531 - 1,602 kHz AntennaLoop antenna Intermediate Frequency 3) You can change the AM tuning scale to 9 kHz or 10 kHz. After tuning in any AM station,

9、turn off the receiver. While holding down PRESET TUNING + or TUNING +, press ?/1. All preset stations will be erased when you change the tuning scale. To reset the scale to 10 kHz (or 9 kHz), repeat the procedure. 450 kHz Models of area code SP, AU Video section Inputs/Outputs Video:1 Vp-p, 75 ohms

10、General Power requirements CA120 V AC, 60 Hz AU240 V AC, 50 Hz SP220 - 230 V AC, 50/60 Hz Area codePower requirements Power consumption Power consumption (during standby mode) Dimensions (w/h/d) (Approx.) Mass (Approx.) Design and specifications are subject to change without notice. Abbreviation AU

11、: Australian model CA : Canadian model E51: Chilean and Peruvian models SP : Singapore and Malaysia models CA225 VA AU, SP150 W E51165 W 0.3 W 6.5 kg (14 lb 6 oz) 430 145 301.5 mm (17 5 6/8 11 7/8 inches) including projecting parts and controls Area codePower consumption E51120/220/240 V AC, 50/60 H

12、z RadioFans.CN 收音机爱 好者资料库 3 STR-K760P SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUA

13、L OR IN SUPPLEMENTS PUBLISHED BY SONY. After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as

14、described below. LEAKAGE The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes). Leakage current can be measured by any one of three methods. 1.A commercial leakage te

15、ster, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these instruments. 2.A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3.Measuring the voltage drop across a resistor by means of a VOM or battery-operated

16、 AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) SAFETY CHEC

17、K-OUT To Exposed Metal Parts on Set 0.15 F 1.5 k AC Voltmeter (0.75 V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat. Unleaded so

18、lder Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.) : LEAD FREE MARK Unleaded solder has the following characte

19、ristics. Unleaded solder melts at a temperature about 40C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350C. Caution: The print

20、ed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! Strong viscosity Unleaded solder is more viscous (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. Usable with ordinary solder It i

21、s best to use only unleaded solder but unleaded solder may also be added to ordinary solder. Parts No. MODEL IDENTIFICATION BACK PANEL MODELPARTS No. Canadian model4-252-087-5s Australian model4-252-087-6s Singapore and Malaysia models4-252-087-7s E51 model4-252-088-7s Abbreviation E51 : Chilean and

22、 Perurian models. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PISES SONY DONT LES NUMROS SONT DONNS DANS CE MANUE

23、L OU DANS LES SUPPMENTS PUBLIS PAR SONY. RadioFans.CN 收音机爱 好者资料库 4 STR-K760P TABLE OF CONTENTS 1. GENERAL5 2. TEST MODE 9 3. DIAGRAMS 3-1. Circuit Board Location 11 3-2. Block Diagrams MAIN Section 12 DISPLAY/POWER Section 13 3-3. Printed Wiring Board DIGITAL Board (Side A) 14 3-4. Printed Wiring Bo

24、ard DIGITAL Board (Side B) 15 3-5. Schematic Diagram DIGITAL Section (1/2) 16 3-6. Schematic Diagram DIGITAL Section (2/2) 17 3-7. Printed Wiring Board MAIN Section 18 3-8. Schematic Diagram MAIN Section (1/2) 19 3-9. Schematic Diagram MAIN Section (2/2) 20 3-10. Printed Wiring Board VIDEO Board 21

25、3-11. Schematic Diagram VIDEO Board 21 3-12. Printed Wiring Board POWER Section 22 3-13. Schematic Diagram POWER Section 23 3-14. Printed Wiring Board FRONT PANEL Section 24 3-15. Schematic Diagram FRONT PANEL Section 25 3-16. IC Pin Function Descriptions 29 4. EXPLODED VIEWS 4-1. Front Panel Sectio

26、n 31 4-2. Chassis Section 32 5. ELECTRICAL PARTS LIST 33 5 STR-K760P SECTION 1 GENERALThis section is extracted from instruction manual. A.F.D. (button/indicator) 9 (27, 2 46) 8, 29, 45) CD wg (20) DIMMER 3 (25) DISPLAY 2 (23, 25, 46) Display 5 (23, 25) DVD wj (20) ENTER qd (17, 34, 46) MAIN MENU qj

27、 (17, 30, 32, 34) MAS MD/TAPE wh (20) TER VOLUME /+ qs (19, 20, 45) MEMORY wa (22) MOVIE (button/indicator) 0 (28, 45) MUSIC (button/indicator) qa (29, 45) PHONES (jack) wd (20, 26, 45) PR TUNING FM/AM wf (20, 21, 34) ESET TUNING /+ ql (22, 48) TUNING /+ w; (21, 48) VIDEO 1 wl (20) VIDEO 2 wk (20) 2

28、CH (button/indicator) 8 (27, 29, 31) +/ qg (17, 30, 32, 34) qh (17, 30, 32, 34) ?/1 (power) 1 (17, 22, 46, 48) ALPHABETICAL ORDER A - L M - ZNUMBERS AND SYMBOLS FM MODE ws (21) Input buttons qk (20, 30, 33, 34, INPUT MODE qf (26, 30) (receptor) 4 (37, 46) Main unit 42 351 qkwsw;qlwaqfqdqgqs 8 9 q; q

29、a wdqhqj wfwgwhwjwkwl 6 STR-K760P ? ? Remote button description ? ? ? ?7? ? HX Mm . - VIDEO1VIDEO2 RM SET UP SYSTEM STANDBYSLEEP TV?/1AV ?/1 SHIFT TOP MENU/ GUIDE AV MENU MUTING MASTER VOL DISPLAY TV VOLTV CH WIDE TEST TONE TV/ VIDEO MAIN MENU RETURN/EXIT D.TUNINGDISCALT ANTCLEARSEARCH MODE 2CHA.F.D

30、. 123 456 789 0/1010/1112 MOVIE SUBTITLEENTER MUSIC AUDIOANGLE JUMP/ TIME PRESET/ CH/D.SKIP DUAL MONO x ?/1 P O v V bB v V bB AV1AV2 DVDMD/TAPECDTUNER 1 e; wl wk wj 2 3 4 5 6 7 8 9 wh wd wa w; qj qh qg ql wg wf ws q; qs qd qf qa qk ENTER ? ? ? ?wd? ? ? ?!? ? ? ? ?#?$?7?%?!? ? ?9% ?,? ? 1?$?$?+ )1?7+

31、8? wg ?%+%&?+ &?!?+ %&?!?+ ?!?+ ?%?!?+ ,? + ? + ? ?!? ? X?qa%&?+ &?!?+ %&?!?+ ?!?+ ?%?!?+ ,? + ? + ? 1?!? ? ?2? ? ? ?!?4 x?wa%&?+ &?!?+ %&?!?+ ?!?+ ?%?!?+ ,? + ? + ? ?!? ? O?qs%&?!?+ ?!?+ ?%?!? ? ?-? ? 3+33?ws?%? ?!? ? 9 STR-K760P SECTION 2 TEST MODE FACTORY PRESET MODE All preset contents are reset

32、 to the default setting. Procedure: While depressing the MAIN MENU and the PRESET TUNING buttons simultaneously, press the ?/1 button again. The message “FACTORY” appears and the present contents are reset to the default values. AM CHANNEL STEP 9 KHz/10 KHz SELECTION MODE Either the 9 KHz step or 10

33、 KHz step can be selected for the AM channel step. Procedure: Set the FUNCTION to AM. Turn off the main power. While depressing the TUNING+ button or the PRESET TUNING + button, press the ?/1 button to turn on the main power. Either the message “9 k STEP” or “10 k STEP” appears. Select the desired s

34、tep. FLUORESCENT INDICATOR TUBE TEST MODE All fluorescent segments are tested. When this test is activated, all segments turn on at the same time, then each segment turns on one after another. Procedure: While depressing the MOVIE and the buttons simultaneously, press the ?/1 button to turn on the m

35、ain power. 1.All segments turn on. 2CH , A. F. D. , MOVIE and MUSIC LED turn on. 2.Press the VIDEO 1 button, confirm display. A.F.D. and MUSIC LED turn on. 3.Press the VIDEO 1 button, confirm display 2CH and MOVIE LED turn on. 4.Press the VIDEO 1 button, All segments and all LEDS turn off. 5.Every p

36、ressing of the VIDEO 1 button turns on each segment and LED one after another in the same order. SOUND FIELD CLEAR MODE The preset sound field is cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair. C SLSR SBLSBR SP A SP B SLEEP OPT CO

37、AX MULTI CH IN 96/24 DIGITALEXPRO LOGIC II x DTS-ESNEO:6 MPEG-2 AAC RDS D.RANGE EQ STEREO MONO DDDD kHz mft. MHz MEMORY DIRECT L SW CR SLSSR SBLSBSBR LFESP A SP B SLEEP OPT COAX MULTI CH IN 96/24 DIGITALEXPRO LOGIC II x DTS-ESNEO:6 MPEG-2 AAC RDS D.RANGE EQ STEREO MONO DDDD dB kHz mft. MHz MEMORY DI

38、RECT L SW R S SB LFESP A SP B SLEEP OPT COAX MULTI CH IN 96/24 DIGITALEXPRO LOGIC II x DTS-ESNEO:6 MPEG-2 AAC RDS D.RANGE EQ STEREO MONO DDDD dB kHz mft. MHz MEMORY DIRECT Procedure: While depressing the 2CH button, press the ?/1 button to turn on the main power. The message “SF. CLR.” appears and i

39、nitialization is performed. SOFTWARE VERSION DISPLAY MODE The software version is displayed. Procedure: While depressing the FM MODE and the DISPLAY buttons simultaneously, press the ?/1 button to turn on the main power. The model name, destination and the software version are displayed. KEY CHECK M

40、ODE Button check Procedure: While depressing the A.F.D. and the TUNER FM/AM buttons simultaneously, press the power ?/1 button to turn on the main power. “REST 25” appears. Every pressing of any button other than ?/1 counts down the buttons. The buttons which are already counted once are not counted

41、 again. When all buttons are pressed “REST 00” appears. COMMAND MODE SELECTION MODE The command mode (AV1 or AV2) of the remote commander can be selected. Procedure: 1.While depressing the ENTER button, press the ?/1 button to turn on the main power. 2.The message “C.MODE.AV 1” or “C.MODE.AV 2” appe

42、ars for a moment. Select the desired mode. 10 STR-K760P MEMO 1111 STR-K760P Waveforms DIGITAL Board For schematic diagrams. Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unles

43、s otherwise specified. %: indicates tolerance. f: internal component. 2 : nonflammable resistor. 5 : fusible resistor. C : panel designation. A : B+ Line. B : B Line. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. No mark : FM * : Imposible to measure Volt

44、ages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Waveforms are taken with a oscilloscope. Circled numbers refer to waveforms. Signal path. F: FM J: ANALOG INPUT c: DIGITAL INPUT Abbreviation AUS: Australian model CND: Canadian m

45、odel E51 : Chilean and Peruvian models MY : Malaysia model SP: Singapore model THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this necessary note is printed in each block.) Caution: Pattern face side:Parts on the pattern face side seen from (Side A)the pattern

46、face are indicated. Parts face side:Parts on the parts face side seen from (Side B)the parts face are indicated. For printed wiring boards. Note: X : parts extracted from the component side. a: Through hole. f: internal component. : Pattern from the side which enables seeing. C B These are omitted.

47、E Q B These are omitted. CE 1 IC1101 wa (XOUT) 4.7 Vp-p 1V/div, 40ns/DIV 81.4ns (12.288MHz) 2 IC1201 9 (MCLK1) 2.8 Vp-p 73.6ns (13.59MHz) 1V/div, 40ns/DIV 3 IC1601 id (XI) 3.5Vp-p 62.5ns (16MHz) 1V/div, 40ns/DIV Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Note: Les composants identifis